Hi @mindhash - excellent point. I completely agree that supply is key. However that is the side I am much confident about. I have been fortunate to work for some of the best silicon valley companies so have built a network of talented professionals overtime. Some of them would definitely not do it for $50 but a lot more may be willing to spend their free time doing this. Also the way I am thinking of implementing it (if I ever do depending on the demand), is very non-intrusive. In my mind, the mock interviews do not need to be face to face all the time, they can be done in an asynchronous way (I can share details if you'd like). I created a landing page to gather the interest but not sure where to share the link so I can get people to give me feedback.
I know tripple byte and you are right, they depend on their YC network. I am also dependent on my personal network hoping if there is enough demand I can convince my talented friends to do it :-)) Thanks a lot for your feedback